Field help (PLH) 

The fixed horizon (in leadtime unit) is used in the calculation of the Master Production Schedule (MPS) and Material Requirements Planning (MRP). It can be used to freeze the production plan on a given period: the suggestions used to cover the shortages located within this horizon are transferred onto the first period beyond this horizon.

These suggestions are subject to a specific marking in the MRP results and MPS results inquiries: in the Order column, the order code is followed by an asterisk (*).